Scrub Typhus India Dataset

Methods

This study examines the prevalence of scrub typhus cases reported from 2003 to 2023, utilizing available literature to provide a breakdown of cases by year and state in India, aiming to elucidate the disease's spatiotemporal dynamics. The etiologic association of Orientia tsutsugamushi and scrub typhus is based on geographical, immunological and molecular genetic findings. Findings This analysis identified 47,650 cumulative cases of scrub typhus in India over the past two decades.

The case fatality rate was ~2.4%. Variations in transmission dynamics and the Leptotrombidium (tick responsible for causing scrub typhus), the most common vector’s competence, may influence the disease's distribution. Nonetheless, there has been a notable increase in infections since 2010, peaking in 2019 and 2022.

Curtailing and containing such an upsurge can be daunting and requires an interdisciplinary public health approach. Further, there is heterogeneity in studies on general, gastrointestinal, pulmonary, and inflammatory symptoms compared to studies on cardiac, hepatic, neurological and other symptoms. Weil-Felix test was the most common diagnostic technique used and doxycycline was the treatment for scrub typhus cases.

Interpretations This meta-analysis can help policymakers and researchers in India develop scrub typhus management and control policies.